The aluminum alloy tights are machine handmade tools, which can pull tightening cables, or hang up and down. It uses an aluminum alloy cover, with good strength and lightness. 0.75 tons of aluminum alloy hand pulling gourds with small volume, light weight, good shape, small hand strength, safe and reliable, long service life, etc. It is suitable for shipbuilding, post and telecommunications, mines, power, transportation and other departments for no power supply occasion for use as a power supply. Heavy objects, equipment installation, mechanical traction and other operations. 1.5 tons of aluminum alloy chain tight wires and 3 -ton Ricky hand -tip chain crane can quickly drag the heavy chain during empty loads to achieve the rapid positioning of the hook.